Cacodemon Red
#9f0000
A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.
Hex
#9f0000
RGB
159, 0, 0
OKLCh
44.1% 0.181 29.2°
CIELAB (D50)
33.4, 56.8, 48.4
What is true of this colour, and of no other
- 13 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
- It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
- As text on white it measures APCA Lc 86.6; on black, Lc -15.5. The sign is the polarity, which the WCAG ratio discards.
- Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 35.7 and 38.2 and 41.8 — no red cone.
Text on this colour
White text
8.49:1 — passes AA
Black text
2.47:1 — fails AA
White text is the better of the two at8.49:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#9f0000
protanopia
#383805 · ΔE00 35.7
deuteranopia
#5a5a00 · ΔE00 38.2
tritanopia
#737300 · ΔE00 41.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDragon Red at ΔE00 0.192: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Dragon RedΔE00 0.192 · #9e0200
- Megido RedΔE00 0.408 · #a10000
- Bloodthirsty VampireΔE00 0.876 · #9b0503
- Deep RedΔE00 0.965 · #9a0200
- Stanger RedΔE00 1.019 · #a40000
- Gory RedΔE00 1.16 · #a30800
- OU Crimson RedΔE00 1.224 · #990000
- Dramatical RedΔE00 1.422 · #991100
- Red PentacleΔE00 1.426 · #a60000
- Cavalry BrownΔE00 1.454 · #990003
- Crimson RedΔE00 1.48 · #980001
- Totem PoleΔE00 1.894 · #991b07
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.